Sk2DPathEffect.cpp revision ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976e
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com */ 8ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 98a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 108a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "Sk2DPathEffect.h" 118a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkBlitter.h" 128a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkPath.h" 138a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com#include "SkScan.h" 148a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 158a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comclass Sk2DPathEffectBlitter : public SkBlitter { 168a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.compublic: 178a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffectBlitter(Sk2DPathEffect* pe, SkPath* dst) 188a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com : fPE(pe), fDst(dst) 198a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com {} 208a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com virtual void blitH(int x, int y, int count) 218a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com { 228a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fPE->nextSpan(x, y, count, fDst); 238a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 248a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comprivate: 258a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffect* fPE; 268a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath* fDst; 278a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com}; 288a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 298a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com//////////////////////////////////////////////////////////////////////////////////// 308a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 318a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comSk2DPathEffect::Sk2DPathEffect(const SkMatrix& mat) : fMatrix(mat) 328a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 338a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mat.invert(&fInverse); 348a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 358a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 368a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.combool Sk2DPathEffect::filterPath(SkPath* dst, const SkPath& src, SkScalar* width) 378a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 388a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com Sk2DPathEffectBlitter blitter(this, dst); 398a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPath tmp; 408a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkIRect ir; 418a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 428a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.transform(fInverse, &tmp); 43d252db03d9650013b545ef9781fe993c07f8f314reed@android.com tmp.getBounds().round(&ir); 448a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com if (!ir.isEmpty()) { 458a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // need to pass a clip to fillpath, required for inverse filltypes, 468a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com // even though those do not make sense for this patheffect 478a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkRegion clip(ir); 488a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 498a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->begin(ir, dst); 508a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkScan::FillPath(tmp, clip, &blitter); 518a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->end(dst); 528a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } 538a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return true; 548a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 558a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 568a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::nextSpan(int x, int y, int count, SkPath* path) 578a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 588a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com const SkMatrix& mat = this->getMatrix(); 598a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com SkPoint src, dst; 608a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 618a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.set(SkIntToScalar(x) + SK_ScalarHalf, SkIntToScalar(y) + SK_ScalarHalf); 628a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com do { 638a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com mat.mapPoints(&dst, &src, 1); 648a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com this->next(dst, x++, y, path); 658a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com src.fX += SK_Scalar1; 668a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com } while (--count > 0); 678a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 688a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 698a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::begin(const SkIRect& uvBounds, SkPath* dst) {} 708a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::next(const SkPoint& loc, int u, int v, SkPath* dst) {} 718a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::end(SkPath* dst) {} 728a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 738a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com//////////////////////////////////////////////////////////////////////////////// 748a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 758a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comvoid Sk2DPathEffect::flatten(SkFlattenableWriteBuffer& buffer) 768a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 771a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org char storage[SkMatrix::kMaxFlattenSize]; 781a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org uint32_t size = fMatrix.flatten(storage); 791a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.write32(size); 801a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.write(storage, size); 818a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 828a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 838a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comSk2DPathEffect::Sk2DPathEffect(SkFlattenableReadBuffer& buffer) 848a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 851a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org char storage[SkMatrix::kMaxFlattenSize]; 861a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org uint32_t size = buffer.readS32(); 871a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org SkASSERT(size <= sizeof(storage)); 881a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org buffer.read(storage, size); 891a39493b328d945a000a0690659beb18aa932d3dsenorblanco@chromium.org fMatrix.unflatten(storage); 908a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com fMatrix.invert(&fInverse); 918a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 928a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 938a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comSkFlattenable::Factory Sk2DPathEffect::getFactory() 948a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 958a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return CreateProc; 968a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 978a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 988a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.comSkFlattenable* Sk2DPathEffect::CreateProc(SkFlattenableReadBuffer& buffer) 998a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com{ 1008a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com return SkNEW_ARGS(Sk2DPathEffect, (buffer)); 1018a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com} 1028a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1038a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 1048a1c16ff38322f0210116fa7293eb8817c7e477ereed@android.com 105